Recoil-gun.



No. 809,821. PATENTED JAN. 9, 1906.

0. LAUBER.

REOOIL GUN.

APPLICATION FILED AUG. 10,1905- r n: 1 N Q9 M Q Nb 2 lg I N mm a r UNITED STATES PATENT OFFICE.

OTTO LAUBER, OF ESSEN-ON-THE-RUHR, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELLSCHAFT. OF ESSEN-ON-THE-RUHR, GERMANY.

REOOlL-GUN.

Specification of Letters Patent.

Patented Jan. 9, 1906.

To all whom it may concern.-

Be it known that I, OTTO LAUBER, a subject of the German Emperor, and a resident of Essen-on-the-Ruhr, West Germany, have invented certain new and useful Im rovements in Recoil-Guns, of which the fol owing is a specification.

The present invention relates to recoilguns provided with means for securing the brake-cylinder to the gun-barrel and for incasing the recuperator-spring, as described in the United States Letters Patent No. 791,347, granted May 30, 1905; and the ob ject of this invention is to provide improved means for introducing the brake fluid into the brakccylinder.

In the accompanying drawings I have shown two embodiments of the invention by way of example.

Figure 1 is a vertical longitudinal section of one embodiment of the invention. Fig. 2 is a section on the line 2 2, Fig. 1, looking from the right. Fig. 3 is a vertical longitudinal section of the other embodiment; and Fig. 4 is a section on the line 4 4, Fig. 3, looking from the right.

Reference will be had first to Figs. 1 and 2, which show the invention applied to the recoil-brake described in the United States Letters Patent No. 791,347. A indicates the cradle, B the horn of the gun-barrel, and O the recuperator-spring. The brake-cylinder D is provided with a reduced part 01, which engages the horn B, and in addition to the fluid-space d the cylinder is provided with a chamber F, which is closed toward the fluidspace. The chamber F is not coaxial with the brake-cylinder, but has its longitudinal axis lying vertically beneath the longitudinal axis of the brake-cylinder. The chamber F receives the screw E, which serves the purposes of both a connecting-screw and a tension-screw. At the rear the wall of the chamber F is provided with internal screw-threads for the screw E, which, as heretofore, abuts with a head 6 against the horn B. The diameter of the reduced part (1 of the brakecylinder and the dimensions and arrange ment of the screw E and of the chamber F are so selected that a sufficiently-strong connection is insured between the gun-barrel and the brake-cylinder and sufficient space is left for a passage through which the brake fluid may be conveniently introduced into the brake-cylinder. The passage is in the form of a bore G, Figs. 1 and 2, which is formed in the thickest part of the wall of the chamber F vertically above the longitudinal axis of the chamber. The bore G extends from the rear outer wall of the chamber to the fluidspace (Z and parallel to the longitudinal axis of the brake-cylinder. The outer or rear end of the bore is enlarged and provided with screw-threads which receive a screw-plug H, Fig. 1. The plug is provided with a projection h, which tightly closes the narrow part of the bore G, and with a square stud h2 for engagement with a suitable key. The enlargement of the bore G is of such length that the stud k does not project beyond the rear wall of the chamber F. The head 6 of the screw E is provided with a perforation e which is coaxial with the bore G when the screw E is screwed home, Fig. 1. A second screw J passes through the perforation e and is screwed into the enlargement of the bore G. The screw is provided with a recess for the stud 7L and abuts against the plug H. The head i of the screw J is located in the perforation e and is provided with a square stud 07. By reason of this arrangement the screw J simultaneously secures the plug H and the screw E against accidental turning. When it is desired to loosen the screw E, it is necessary to remove the screwJ only, and the passage H therefore remains closed by the plug H.

Flgs. 3 and 4 show the invention applied to the recoil-brake described in the United States Letters Patent No. 793,840. The connecting and tension screw E is arranged in a chamber K, which is eccentrically located in the brake-cylinder and which is closed toward the fluid-space m of the brake-cylinder. The wall of the chamber K is firmly screwed on the brake-cylinder M at m and is provided with a reduced portion k,which engages with the horn B of the gun-barrel. The diameter of the part is and the dimensions and arrangement of the chamber K or its wall are so selected that more fluid-space is provided than in the embodiment first described and the same advantages are obtained as in the other embodiment-viz, it is possible to arrange a passage G, Figs. 3 and 4, for convenient introduction of brake fluid and still ob tain a suffi ciently-strong connection between the gun-barrel and the brake-cylinder. The

screws H and J, Fig. 3, serve the same purpose as in the other embodiment.

.Having described the invention, what is claimed as new therein is 1. In a recoil-brake, the combination with the brake-cylinder, of a housing having a chamber closed to the brake-cylinder to receive the securing-screw, and a passage leading through said housing along the side of the screw-chamber. and opening into the brake-cylinder.

2. In a recoil-brake, the combination with the brake-cylinder, of a housing extending from one end thereof and having an eccentrically-positioned screw-receiving chamber closed to the brake-cylinder and a fluid-introducing passage located in the thickest portion of the housing-wall and opening into the brake-cylinder.

3. In a recoil-brake of the character de scribed, the means for securing the brakecylinder to the gun, the housing for said means provided with a passage leading from the exterior to the fluid-space of the brake-cylinder, and the means for holding the securing means in position, projecting into the passage in the housing.

4. In a recoil-brake of the character described, the means for securing the brakecylinder to the gun, the housing. for said means provided with a passage leading from the exterior to the fluid-space of the brakecylinder, the means for closing said passage toward the exterior, and the means for holding the securing means in position projecting into the passage in the housing and engaging said closing means.

The foregoing specification signed at Dusseldorf this 27th day of July, 1905.

OTTO LAUBER.

In presence of- WVILLIAM EssENwEIN, PETER LIEBER. 

